New 14-mm diameter Niti-S biliary uncovered metal stent for unresectable distal biliary malignant obstruction

• 作者: Ken Sugimoto Masataka Kikuyama Naofumi Shirane Shinya Kawaguchi Shuzou Terada Tsuyoshi Mukai
• 来源期刊: 世界胃肠内镜杂志：英文版（电子版）
• 学科: 医学
• 关键词: Metal stent Malignant BILIARY OBSTRUCTION Pancreatic CANCER Migration Pancreatitis Bile duct CANCER OVERGROWTH Recurrent BILIARY OBSTRUCTION INGROWTH Adverse event
• 年，卷（期）: 2018,（1）
• 页码范围: 16-22
• 页数: 7页
• 分类号: R

摘要

AIM To investigate whether an uncovered self-expandable metal stent(UCSEMS)with a large diameter could prevent recurrent biliary obstruction(RBO).METHODS Thirty-eight patients with malignant biliary obstruction underwent treatment with an UCSEMS with a 14-mm diameter(Niti-S 14).Retrospectively,we evaluated technical and functional success rate,RBO rate,time to RBO,survival time,and adverse events in these patients.RESULTS Stent placement success and functional success were achieved in all patients.Two patients(5.3%)had RBO due to tumor ingrowth or overgrowth.The median time to RBO was 190(range,164-215)d.The median survival time was 120(range,18-502)d.The 6-mo non-RBO rate was 91%.Other adverse events other than RBO occurred as follows:Acute cholecystitis,post-ERCP pancreatitis,hemobilia,and fever without exacerbation of liver injury,and liver abscess in 4(10.3%),3(7.9%),2(5.3%),1(2.6%),and 1(2.6%),respectively.Migration of the stents was not observed.CONCLUSION Niti-S 14 is considered to be a preferable metal stent because of a low rate of RBO with no migration.